Machine for placing, pressing, and drying end caps on paper rolls



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w. LJUNGSTROM MACHINE FOR PLACING,'PRESSING, AND DRYING END CAPS ONPAPER RQLL S 4 Filed Nov. 21. 1925 9 Sheets-Sheet 8 Sept- 1 3,

, msssliiifi MACHINE FOR PLACING AND DRYING END CAPS ON PAPER ROLLS 9Sheets-Sheet, 9

Fil afi Nov. 21, 1925 Patented Sept. 13, 1927.

UNITED STATES 1P AT NT. o F'FlcEf WALFRID LJUNosTRoM, F Mart ans,swnnEN.

MACHINE FOB PLACING, PRESSING, ANDDRYING END cArs on PAPER ROLLS.

Application filed November 21, 1925, Serial No. 70,644, and inSwedenOctober 2, 1924.

In packing the paper rolls obtained in the manufacture of paper, theends of each roll are covered with caps of millboard or strong paper,jute or the like.

5 of these caps is partly to protect the ends of the roll and partly tosecure the ends of the paper wrapping that are bent over the edges ofthe roll. The caps are coated with an adhesive and, up to the present,they have been pressed against the ends of the roll by hand or by tworelatively movable press heads. Hand labour, however, is expensive, andin many cases does not turn out very good work while the mechanicalmeans is in many ways objectionable. The present invention provides amachine for pressing and drying such end caps used in packing paperrolls, by which the work can be done quickly and efficiently. Themachine is chiefly characterized by two press heads (heated b steam,electricity or the like) one of whic is stationary, whereas the other isarranged in such manner that it can be brought, by means of a screw orother one, for the purpose of pressing caps which have been placed onthe ends of a paper roll, said roll being located on a support, somounted that it is free to move in the same direction as the movablepress head to equalize the pressure exerted by the two heads.

In order that the invention may be clearly understood, it will now bedescribed with reference to the accompanying drawings,

whereon Figures 1 and 1 together constitute a plan Figs. 6 and 7 showthe starting and stop ping mechanism drawn to an enlarged sca Fig. 6being a plan view and Fig.7 a section on line VII-VII in Fig.6.

Figures 8 and 9 show, partly in section, another construction of thepress heads;

Figure 10 shows, in sectional elevation, a third form of the pressheads, and Figure 11 is an end view of one of said heads;

The object mechanical device, towards the stationary- Figure 12 is 'anend elevation of one end of a paper roll, with the paper wrapping partlybent over; g

Figures 13 and 14 show respectively a sectional elevation and an endview of an auxiliary device to facilitate placing the afore said caps onthe ends of the paper roll;

Figures 15 and 16 show a fourth form of the press heads; and

Figures 17 and 18 show a fifth form of the press heads; I

In the drawings the references 1 and 2 denote the two press heads eachof which, in the embodimnt illustrated by Figures 1to 3, is made hollowand provided with a steam inlet 3 and with an outlet 4 for condensedwater. The press head 1 is attached to a stat onary standard 5,-by meansof a central balljoint bracket, to enable the head to adapt itself tothe end surface of the roll during the pressing process. The press head2 is movable and is connected, by means of a ball joint, with a screw 6.This is mounted in a frame 7 supported on wheels 8, 9, so that the wholeforms a carriage which can be moved to and fro on rails 10 to facilitatethe placing of the press head 2 at a convenient distance from the presshead 1 corresponding approximately. to the length of the paper roll thatis to be packed. In order to fix the carriage in position on the railswhen it has been set at the proper distance, it is provided with a brake11. In addition, screws 12 (Figs. 2 and 2),'can be caused to engage withthe rail so as to lock the carriage in place;

The screw 6 is arranged to be driven by means of an electric motor 13mounted on the frame 7 and actuating through pinion gearing 14, 15, areversible double belt drive 16, 17 and pinion gearing 18, 19. Thepinion 19 is mounted in two bearing pedestals 20, 21 and the hub of thepinion is provided with, or shaped as, a nut engaged by the screw 6which is thereby displaced axially in one or the other directionaccording'to the direction of rotation of the pinion, with aconsequential displacement of the press head 2. To enable the drive tobe reversed without changing the direction of rotation of the drivingmotor, the belt 16 is uncrossed, whereas the belt 17 is crossed. Whenthe machine is not in operation, the belt 16 runs on an idle pulley 22while the belt 17 runs on an idle pulley 23 both mounted on theengagement with a slot 29 in the belt-fork sup ort and is therebylocked.

T e construction and operation of the han- Idles 26 and 27 will be moreparticularly described hereinafter with reference to Figs. 6 and 7 Toenable the transmission of power to the screw to be stoppedautomatically at a predetermined position, a wheel 31, provided with arelease cam 30, is arranged opposite the slot 29. j

shaft 39 by means of pinion gearing 32, 33

This wheel is rotated from the and 34, 35, and a belt 38 running onstepped pulleys 36, 37. 2 At each revolution of the wheel 31 the camthereon operates a member (Figs. 6 and 7) on the frame 90 therebyforcing the engaged handle out of the slot 29 so that it may spring backinto neutral position, the belt 16 or 17, whichever is in action at thetime, being thereby moved .on to its idle pulley at the same time.Ohviously, the timing of the operation of the member 40 can be adjustedby altering the position of the belt 38 on the stepped pulleys.

Between the press heads 1 and 2 is ar. ranged a truck 41, running onrails and intended to support the paper roll in the course of packing.The truck is mounted on wheels 41 so as to be freely movable in the samedirection as the movable press head, to equalize the pressure eXerted onthe roll by the two press heads. For the purpose of lifting the finishedroll off the truck 41, the latter is provided with a lever 42.

The machine works in the following manner.

First the carriage supporting the press head 2 is adjusted and clampedon the rails in a position corresponding to the length of the paper rollto be packed, the screw 6 and press head 2 being at this time in position towards the right in Figures 1 and 2. The paper wrapping, which haspreviously been placed round the paper roll and pro jects a shortdistance beyond the edges of same, is turned over at the edges by hand(Figure 12), and the roll is then run on to the truck 41 between thepress heads 1 and 2. Paper or millboard end caps, previously coated witha suitable adhesive, are next inserted between the ends of the roll andthe press heads 1 and 2, and pressed firmly against the ends of the rollin any suitable manner, as by hand, so as to rest attached to thebent-over edges of the paper wrapping. This having been done, the'belt16 is manually moved into working position on which itexerts thepressure required to fix the end caps, the release cam 30 acts on thestop- 40, which forces the handle 26 out of the slot 29 andautomatically returns the belt 16 on to its idle pulley The movement ofthe'screw 6 is thus stopped, but the paper roll is allowed to remain inthis position, gripped between the heated press heads, for about half aminute to complete the packing process. Thereafter the handle 27manually moved over to engage in the slot thus moving the crossed belt17 on to the fixed pulley-28 and causing the pinion 19 to turn in thereverse directign, bringing the screw 6 and press head 2 back into theiroriginal positions. Hereupon, the drive is again auton'iaticallystopped, the handle 27 being forced out of the slot 29 by the releasecam 30 when the wheel 31 has completed a turn in the reverse direction;Finally the packed paper roll is taken off the truck 41 by means of thelever 42, and the machine is ready to deal with another roll.

The pressheads 1. and 2 again form the chief parts of the embodiment ofthe machine shownin Figures 4 and 5. As before,

the press head 1 ismounted on the standard 5 by means of a ball-jointbracket while the movable press head 2 is connected, by means of a balljoint, with the screw 6 mounted in the frame 7, this frame beingsupported on wheels 8, 9, thereby forming a carriage adapted to run onthe rails 10. In contrast to.the embodiment according to Figures 1 to 3the carriage is not provided with a braking device, but is free totravel to and fro along the rails 10 during the operation of themachine. r

The starting and stopping mechanism which is similar to that describedwith refercnce to 1-3 is clearly shown in Figs. 6 and '2'.

Belt forks 24 and mounted on rods 96 and 9? respectively, are providedfor shifting the belts, said rods being slidable in the frame 90. Therods are connected by brackets 98"and 99 with handles 26 and 27respectively, by which one or other of the belts can beshifted into itsworking position on a pulley '28 fast on the shaft'39. The

handles 26 and 2? are fixed at their lower ends and are resilient sothat they can be bent or flexed in two directions at right angles toeach other. These handles are so fixedthat normally theyoecupy theposition shown in full lines in Figs. 6 and 7 l1812111- All) aftertermed the inoperative position) but even in this position. they tend toflex towards the frame 90 and as shown bear against this frame. In thisway when either of the handles is moved longitudinally along the frame,which they can do by flexing, into a position opposite the recess 29 inthe frame 90 the handle will flex into the said slot and be retainedthereby. Thisis termed the operative position of the handle becausein-the movement of the handle into the slot one of the belts is moved onto a fast pulley.

A powerful spring 59 (Figs. 4 and 5) coaxial with the screw 6 isprovided, this spring acting between the carriage and a strut 107 whichbears against a fixed wall or fixed stand 76, said strut having loosespacing pieces 77 of wood or the like for the purpose of adjusting themachine to deal with'paper rolls of different lengths. Moreover thisstrut is arranged to pass freely into the spring and is provided with anabutment 108 fixed thereon which engages with the end of the spring. Onthe abutment is mounted a pointer 53 movable over a. fixed scale 54 sothatthe pointer can be set in accordance with the pressure which thepress head is to exert upon the paper roll. A lever 51 is provided witha series of holes 52 any one ofwhich can receive a pin to passtherethrough and to engage with the abutment 108 so that the position ofthe lever relatively to the abutment can be adjusted. The lever 51projects forwardly and is provided near its forward end with aprojecting pivot 110 by which it is connected to the cam-lever 55rockably mounted on the stub shaft 111 carried by a bracket 112. The camlever 55 is so mounted that it is free to move axially on the shaft 111and on the pivot 110 (Fig. 6) in addition to the rocking move-- ment.Moreover the cam lever 55 is also pro- 'vided with a cam or inclinedsurface 113 which contacts with a camor inclined surface 114 fixed onthe bracket 112. The arrangement is such that when the lever 51 is movedthe cam lever 55 is rocked and by the action of the cam surfaces 113 and114 is moved towards the lever 26 so as to force it out of the slot 29.

he machine is operated in the same way as the embodiment according toFigures 1 to 3, by means of an electric motor 13 acting through. piniongearing 14, 15 and a reversible double-belt drive '16, 17. The belt 16is straight, and'the belt 17 crossed. hen the machine is put out ofoperation, the belt 16 runs onthe idle pulley 22 and the belt 17 on theidle pulley 23. The belts 16, 17 are provided with belt forks 24, 25,respectively controlled by handles 26, 27 that are normally constrainedto the inoperative po-, sition by springs 56 and 57. Power istransmitted to the screw 6 by way of the pinion gearing 18, 19. Byshifting the belts 16, 17

respectively on to the fast pulley 28, a movement in one or otherdirection is imparted to the screw 6.

The belt forks 24, 25 are controlled in such a way that when the handle26 is moved into working position in the slot 29, the screw 6 is causedto advance, and pressure is exerted, whereas when the handle 27 is movedinto the slot 29, the screw 6 is withdrawn.

, The machine according to Figures 1 to 3 does not operateautomatically, and the handles must be manually moved into, operativeposition. This defect is remedied 1n the embodiment according to Figures4 and 5,

inasmuch as when the screw 6 exerts pressure against the end covers ofthe paper roll, the carriage is forced back and the spring iscompressed, thus moving the lever 51 and.

causing the cam lever 55 to act as hereinbefore explained to force thehandle out of the slot so as to allow it to move back into its originalposition.

Motion is transmitted from the motor pinion 14 to a pinion 58, the shaftof which carries a worm 59. This worm drives a worm wheel 60, the shaftof which carries a small pinion 61 in mesh with a pinion 62 providedwith an adjustable projection 63 which although adjustable in the slot66 is normally fixed upon its pinion and is moved round in an arcuatepath thereby, and in its movement acts on the belt control handle 27 forthe purpose of bringing the same into operative position in the slot 29.Another pinion 64, provided with an adjustable projection 65, mesheswith the pinion 61. The pro ection coacts with the belt control handle26 to move the same into operative.

a gradual rearward movement of the carriage and compression of thespring 50. As soon as the required pressure, indicated on the scale 54,is attained, the lever 51 is moved to a position in which it actuatesthe cam lever 55 to force the spring handle 26 out of the slot 29 whichhandle then returns to its original position under the influence of thespring 56. This causes the belt 16 to be shifted on to the idle pulley22, and the movement of the screw 6 ceases. At the same time, however,the projection 63 of the pinion 62 acts on the spring handle 27 andmoves it into operative position in the slot 29, thus shifting the belt17 on to the fast pulley 28 and reversing the movement of the p (ofsheet copper for example).

ment of the screw 6 is obtained as with the embodiment according toFigures 1 to 3.

The wheel 31 (which is provided with a release cam 30 and is actuatedfrom the shaft of the belt pulley 28 through pinion gearing 70, 71 and72, 71-3, and belt gearing 74k, coacts with the handle 27 in such a waythat the cam 30 "forces said handle out of the slot 29 when the screw 6has drawn back far enough to enable a new paper roll to be inserted.This done, the handle 26 is moved back into operative position in themanner already described, nd anew pressing operation is performed, themotor 13 running all the time. Hence, the machine can be run by one man,who has merely to insert and remove the paper rolls and keep inreadiness the end caps to be applied to the ends of the rolls.

Figures 8 and 9 represent a modilie-zl term of the press heads, in which'one or more steam coils 43 is or are provid d in each head andsupported therein by radial. webs 91. The mo able head 2 is shown butthe stationary head 1 is similar. in this embodiment, the heads may beof lighter construction thanthe heads ot. the machine il- 'lustrated byFigures 1 to 3. comparatively light press heads can also be used. whenelectric heating resistances are provided therein.

In the embodiment according to Figures 10 and 11, the working faces ofthe press heads 1 and 2 are each provided with a covering of wirenetting i l or a perforated plate Said taces may also be perforated orcorrugated. The purpose of such arrangement is to prevent theadhesive-coated end caps from being pressed so tightly against the pressheads as to become detached from the paper roll under treatment, whenthe press heads are moved apart again. This may happen in the event ofthe end caps having, through an oversight, also been coated withadhesive on the side facing the press heads.

One or both of the press heads may be provided with a stamp 15, as shownin Figiire 11, so as to impress the end caps in any desired way duringthe pressing operation. These stamps are interchangeable, so that theirlettering, (e. g, the name of the maker, or customer, &c.), may bechanged as required.

As shown in Figure 10, the journal 98 carrying the movable press head orthe journal 92 carrying the fixed press head or both. may bearranged tyield to certain extent, being mounted in bushes 46 containing powerfulspiral springs 47.

the aid of two similar auxiliary devices, one of which is illustrated byFigures 13 and 14:, the end caps can be placed on the ends'ot' the paperrolls in a convenient manner outside the machine. Each device consistsof a springy ring 48 provided with small lugs 49, and is adapted toreceive one of the two loose end caps required for each paper roll to bepacked. The rings containing the end capsv are slipped over the ends ofthe paper roll 94 12) and grip the same by virtue of their elasticity,whereupon the roll can be easily adjusted in the machine and pressed. Inorder to hold the end caps in the proper position, each ring may beprovided with a metal wire netting 50 as shown in Figure 14:. Of course,in such case, the wire netting shown in Figure 10, covering the pressheads, can be dispensed with.

According to the embodiment shown in Figures 15 and 16, each press headconsists of hollow iron member 78, in which is housed an electric heater79. A thin plate or steel or other suitable material is pro vided on theside next the paper roll, and is supported by spring bolts 81. so thatit can adapt itself to the raised tolds produced by turning over theends of the wrapping paper. and thus prevent the resulting ridges frombeing pressed into the roll and damaging the paper.

in the embodiment for the same purpose according to Figures 17 and 18,each press head consists of a hollow member 82 containing); a heatingdevice 83. The side next the paper roll consists of racial segments ofspring steel 84:, which ensure an elastic pressure and adaptability toirregularities on the end surfaces of the paper rolls.

Whilst I have described preferred forms of the machine and parts of thesame, it will be understood by those skilled in the art that manymodifications may be made, and therefore I intend no limitations uponthe invention other than are imposed by the scope of the appendedclaims.

I-Iaving now fully described my invention what I claim and desire tosecure by Letters Patent is 1. A machine for use in pressing on the endcaps of paper rolls enclosed in paper wrap ing, comprising fixed presshead, a movable press head. mechanism for moving said movable --presshead towards said fixed press head for the purpose of pressing the endcaps on a paper roll placed between said press heads. and an automaticstop motion for arresting the, forward movement of said movable presshead.

2. A machine for use in pressing on the end caps of paper rolls enclosedn. paper moving said movable press head towards said fixed press headfor the purpose of pressing the end caps on a paper roll placed betweensaid press heads, and an automatic stop'inotion for arresting theforward movement' of said movable press head.

l. A machine for use in pressing onthe end caps of paperv rolls enclosedin paper wrapping, comprising a fixed press head a carriage, a secondpress head movably mounted on said carriage, and means for automaticallymoving said movable press head towards and away from said fixed presshead for the purpose of operating automatically on paper rolls placedone after another between said pressheads.

5. A machine for pressing and drying the end caps of paper rollsenclosed in paper wrapping, comprising a fixed press head havingprovision whereby it may be heated, a movable carriage, a second presshead movably mounted on saidcarriage and also having provision wherebyit may be heated, it screw for moving said movable press head for thepurpose of pressing and drying a paper roll with its end caps placedbetween said press heads, and driving means for said screw.

6. A machine for pressing and drying the end caps of paper rollsenclosed 1n paper wrapping, comprising a fixed press head havingprovision whereby it may be heated, a movable carriage, a second presshead movably mounted on said carriage and also having provision wherebyit may be heated, I

a screw for moving said movable press head for the purpose of pressingand drying a paper roll with its end caps placed between said pressheads, driving means for said screw, and mechanism operated by saiddriving means for automatically stopping the forward motion of saidscrew when a desired degree of pressure has been attained.

7. A machine for placing, pressing and drying the end caps of paperrolls enclosed in paper wrapping, comprising a fixed press head havingprovision whereby itmay be heated, a movable carriage, a second presshead movably mounted on said carriage and also having provision wherebyit may be heated, a screw for moving said movable press head for thepurpose of pressing and drying a paper roll with its end caps placedbetween said press heads, driving means for said-screw, and mechanismoperated by said driving means, for automatically and repeatedlyreversing the motion of-said screw.

8. A machine for use in pressing on the end. caps of paper rollsenclosed'in paper wrapping, comprising a fixed press head, a movablepress head mechanism for ac tuating said movable press head for thepurpose' of pressing the end caps 'on a paper roll placed between them,a support for the paper roll between said press heads and meansfox-"mounting saidsupport sothat it.

is free to move in the same direction as the movable press head, toequalize the pressure exerted on the roll by the two press heads.

9. A machine for use in pressing on the end caps of paper rolls enclosedin aper wrapping, comprising a fixed press ead, a movable press head,mechanism for actuating said movable press head for the.

purpose of pressing the end caps on a paper stop motion for arrestingthe pressing operation, a support for the paper roll .between said pressheads and means for mounting said support so that it is free to move inthe same direction as the movable press-head, to equalize the pressureexerted on the roll by the two press heads.

10. A machine for use in pressing on the end caps of paper rollsenclosed in paper wrapping, comprising a fixed press head, a movablepress head, means for automatically moving said movable press headtowards and away from the fixed press head for the purpose of pressingthe end caps on paper rolls placed one after another between said ressheads, a support for the paper rolls etween said press heads and meansfor mounting said support so that it is free to move in the samedirection as the movable press head, to equalize the pressure exerted onthe roll by the two press heads.

11. A machine for use in pressing on the end caps of paper rollsenclosed in paper wrapping, comprising a fixed press head, a movablepress head, mechanism for actuating said movable press head for thepur-v moval of the paper roll after the pressing operation.

12. A machine for use in pressing on the end caps of paper rollsenclosed in paper wrapping, comprising two relatively movable pressheads, mechanism for actuating said press heads for the purpose ofpressing the end caps on a paper roll placed between roll placed betweenthem, an automatic them, an automatic stop motion for arresting thepressing operation, a support for the paper roll between said pressheads, and means on said support to facilitate the removal of the paperroll after the pressing operation;

13.,A machinefor use in pressing on the end caps of paper rolls enclosedin paper wrapping, comprising a fixed press head, a movable press head,means for automatically moving said movable press head towards and awayfrom the fixed press head for the purpose or pressing the end caps onpaper rolls placed oneai'ter anotherbetwee-n them, afsupport for thepaper roll between 'saidvpress heads, m eans for mounting said supportso that i'tlis tree to move in the same direction as the movable presshead, to equalize the pressure exerted on the roll by the two pressheads, and means on said support to facilitate the removal of the paperroll after the pressing operation,

14'. A machine for pressing and drying the end caps of paper rollsenclosed in paper wrapping, comprising a fixed head with provisionwhereby it may be heated, a movable carriage a second press head movablymounted on said carriage and also having provision whereby it may beheated, a screw for operating said movable press head, and

,mea-nsflfor driving said screw including a reversible belt drive.

15. A machine for pressing and drying the end caps of paper rolls"enclosed in paper wrapping, comprising 'afixed head with pro visionwhereby it may be heated, a movable carriage, a second press headmovably mounted on said carriage and also having.

provision whereby it may be heated, a screw for operating said movablepress head, means for driving said screw including a reversible beltdrive, belt shifting handles, and means for automatically shifting saidhandles to the inoperative positions to throw said driving means out ofoperation at the end of each stroke of said movable press head.

16. A machine for pressing and drying the end caps of paper rollsenclosed in paper wrapping, comprising a fixed head with provisionwhereby it may be heated, a movable carriage, a second press headmovably mounted on said carriage and also having provision whereby itmay be heated, a screw for operating said movable press head, means fordriving, said screw including a reversible belt drive, belt shiftinghandles, means for automatically shitting said handles to inoperativepositions to throw said driving means out of operation at the end ofeach stroke ot said movable press head, and means for automaticallyreversing said belt drive.

. 17. A machine for pressing and drying the end caps of paper rollsenclosed in paper wrapping, comprising a fixed head with provisionwhereby it may be heated, a movable carriage, a secondpress head movablymounted on said carriageand also having provision whereby it may beheated, spring means in association with said carriage and a fixedabutment, a screw for operating said movable press head relatively tothe said carriage, and means for driving said screw including areversible belt drive and mechanism coasting with said spring means toimpart a reciprocating movement to said.

on the roll by the two press head's. an auto.

matic stop motion'for arresting the pressing operation, and means inassociation with the working faces of'said press heads to prevent theendcaps sticking thereto;

19. A machine for use in pressing on the end raps of paper rollsenclosed in' paper wr'apping, comprising a hired press head, a movablepress head, means for automatically moving said movable press headtowards and away from the fixed press head for the purpose oi pr ing theend caps on paper rolls placed one after another between them, 'asupport 'for the paper roll between said press heads, means for mountingsaid support so that it is free to movein the same direction as themovable press head, to equalize the pressure exerted on the roll by thetwo press heads, and means in association with the working faces of saidpress heads to prevent the end caps sticking thereto.

20. A machine for pressing and drying the end caps of paper rollsenclosed in paper wrapping, con'i'prising a, listed press head withprovision whereby it may be heated, a

movable carriage, a second press head mov-' ably mounted on said cariage and also hav screw -for o erating s" "d movable press head, meansfor driving said screw including a reversible belt drive, and means inassociation with the working faces of said press heads to prevent theend caps sticking thereto.

21. A maehinefoipresin and drying the end caps of paper rolls'enclosed'in paper wrapping, comprising a fixed press head withprovision whereby it may be heated, a movable carriage, a second presshead movably mounted on said carriage and also having provisionwherebyfit may be heated, a screw for operating said movable press head,

means in association with said press heads to prevent the end capssticking thereto, means for driving said screw including a. reversiblebelt drive, belt shifting handles, and means for automatically shiftingsaid handles to the inoperative positions to throw said driving meansout of operation at the end of each stroke of said movable press head.

22. A machine for pressing and drying the end caps'ot' paper rollsenclosed in paper wrapping, comprising a fixed press head with provisionwhereby it may be heated, a movable carriage, a second press headmovably mounted on said carriage and also having provision whereby itmay be heated, a screw for operating said movable press head, means inassociation with said press heads to prevent the end caps stickingthereto, means for driving said screw including a reversible belt drive,belt shitting handles, means for automatically shifting said handles toinoperative positions to throw said driving means out of operation atthe end of each stroke of said movable press head, and means forautomatically reversing said belt drive.

23. A machine for pressing and drying the end caps or" paper rollsenclosed in paper wrapping, comprising a fixed press head with provisionwhereby it may be heated, a movable carriage, a second press headmovably mounted on said carriage and also having provision whereby itmay be heated,

spring means in association with said carriage and a fixed abutment, ascrew ior operating said movable press head relatively to the carriage,means in association with said press heads to prevent the end capssticking thereto, and means for driving said screw including areversible belt drive and mechanism co-acting with said spring means toimpart a continuous reciprocating movement to said screw.

Qet. A machine for use in pressing on the end caps of paper rollsenclosed in paper wrapping, comprising a fixed press head,-

a movable press head, mechanism for actuating one of said press headsfor the purpose of pressing the end caps on a paper roll laced betweenthem, a support for the paper roll between said press heads, means formounting said support so that it is free to move in the same directionas the movable press head, to equalize the pressure exerted on the rollby the two press heads and interchangeable dies for said press heads.

25. A machine for use in pressing on the end caps of paper rollsenclosed in paper wrapping, comprising a fixed press head, a movablepress head, mechanism for actuating said movable press head for thepurpose of pressing the end caps on a paper roll placed between them, asupport for the paper roll between said press heads, means for mountendcaps of paper rolls enclosed in paper wrapping, comprising a fixed presshead, a

movable press-head, a support for the paper roll between said pressheads, means for automatically moving said movable press head towardsand away from the fixed press head for the purpose of pressing the endcaps on paper rolls placed one after another on said support, means formounting said support so that it is free to move in the same directionas the movable press head, to equalize the pressure exerted on the rollby the two press heads, and interchangeable dies for said press heads.

27. A machine for pressing and drying the end caps of paper rollsenclosed in paper wrapping, comprising a fixed press head with provisionwhereby it may be heated, a movable carriage, a second press headmovably mounted on said carriage and also having provision whereby itmay be heated, a screw for operating said movable press head, means fordriving said screw including a reversible belt drive, andinterchangeable dies for said press heads.

28. A paper-roll packing machine comprising a movable and a fixed presshead, mechanism for automatically moving said movable press head towardsand away from said fixed press head, means in association with saidpress heads to prevent the material under treatment sticking thereto,interchangeable dies for said press heads, and transportable means forsupporting the paper roll during the operation of the machine.

29. A machine for pressing and drying the end caps of paper rollsenclosed in paper wrapping, comprising a fixed press head with provisionwhereby it may be heated, a movable carirage, a second press headmovably mounted on said carriage and also having provision whereby itmay be heated, spring means in association with said carriage and afixed abutment, a screw for operating said movable press head relativelyto said carriage, means for driving said screw including a reversiblebelt drive and mechanism co-acting with said spring means to impart acontinuous reciprocating movement to said screw, and scale and pointermechanism in conjunction with said spring means to determine thepressure exerted between said press heads.

30. A machine for use in pressing on the end caps of paper rollsenclosed in paper wrapping, comprising a fixed press head, a

movable press head resiliently mounted, a support for the paper rollbetween said press heads, means for automatically moving said movablepress head towards and away from the fixed press head for the purpose ofpressing the end caps on paper rolls placed one after another on saidsupport and means for mounting said support so that it is free to movein the same direction as the movable press head, to equalize thepressure exerted on the roll by the two press heads.

V 31. In a paper roll packing machine havingtwo press heads, beltdriving mechanisms for operating the heads relative to each other bothdirectly and reversely, handles for controlling the belt drivingmechanisms, automatic means for controlling each of the belt drivingmechanisms including gearing, and means carried by the eating to operatethe handles in succession.

In testimony whereof I aflix my signature.

WALFRID LJUNGSTRUM.

